Yes, you are right. Again refer back to previous post..,. Little sleep and foreign country makes it difficult to think!
If you were going to modify the castor rod, then no, if you were going to modify the bracket it bolts on to, then you may be OK. Depends on your mad fabrication skillz and whether or not you actually do a good job. Again, what R31Nismo administrator dude suggested is correct, speak to your engineer before you do it and get his/her/it's approval, and you should be laughing.
RWC, if you may it look factory, they wont even notice...